1. What is a Commercial HVAC Tonnage Calculator?

Definition: This calculator converts cooling capacity in BTU/hr to refrigeration tons for commercial HVAC systems.

Purpose: It helps HVAC professionals and engineers determine the appropriate system size for commercial buildings.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Tonnage (tons)
• \( BTU \) — Cooling capacity (BTU per hour)

Explanation: One ton of refrigeration equals 12,000 BTU/hour. The formula converts BTU capacity to standard tons.

3. Importance of Tonnage Calculation

Details: Proper tonnage estimation ensures efficient cooling, energy savings, and prevents system over/under sizing.

4. Using the Calculator

Tips: Enter the total cooling capacity in BTU/hr. The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why 12,000 BTU per ton?
A: This standard comes from the amount of heat needed to melt one ton of ice in 24 hours (288,000 BTU/24 hr = 12,000 BTU/hr).

Q2: What's a typical tonnage for commercial spaces?
A: Commercial buildings typically need 1 ton per 300-500 sq ft, but this varies based on insulation, climate, and building use.

Q3: How do I find the total BTU requirement?
A: Perform a Manual J calculation or use our Commercial Load Calculator tool.

Q4: Does this account for multiple zones?
A: No, this calculates total tonnage. For multi-zone systems, calculate each zone separately then sum the results.

Q5: What about heat pump systems?
A: The same calculation applies for cooling capacity. Heating capacity may differ.